T400 - frozen mouse and keyboard after waking from standby

[jsolomin]

I'm experiencing a very annoying problem on my T400 with Win XP Professional SP3:  around 75% of the time, when I wake up my T400 from standby mode, the mouse and keyboard don't work.  Actually what happens is one of these situations:

1) Neither keyboard nor mouse (stick and pad) respond - Ctrl-Alt-Del to enter username/password is not registered, I can't log into Windows

2) Keyboard works (I can log into windows) but mouse doesn't respond

I have to close the laptop to standby and re-open, repeatedly, until it finally works.  Though one interesting aspect is that if I have external USB keyboard and mouse plugged in, they always work.

Anyone have any ideas?  Thank you in advance!

[tanujhanda Retired Partner]

Hello jsolomin and welcome to community,

Kindly update the BIOS and then check if the issue gets resolved.

BIOS Update (Bootable CD)

BIOS update utility for Windows 32-bit

BIOS update utility for Windows 64-bit

Best Regards,

Tanuj

[jsolomin]

Thanks for the tip -- where can I find instructions on how to do this?  Do I run the EXE utility or do I burn the CD image and boot from that?